ARKit, visionOS: Creating my own data provider

As the scene data providers in ARKit on visionOS simulator are not supported, I try to create my own with dummy data.

As soon as I try to run an ARKit session with an instance of that provider I get a crash (EXC_BREAKPOINT).

So what am I doing wrong?

Definition of data provider:

@available(visionOS 1.0, *)
public final class TestSceneDataProvider: DataProvider, Equatable, @unchecked Sendable {
    public static func == (lhs: TestSceneDataProvider, rhs: TestSceneDataProvider) -> Bool {
        lhs.id == rhs.id
    }
    
    public typealias ID = UUID
    
    public var id: UUID = UUID()
    
    public static var isSupported: Bool = true
    
    public static var requiredAuthorizations: [ARKitSession.AuthorizationType] = []
    
    public var state: DataProviderState = .initialized
    
    public var description: String = "TestSceneDataProvider"
}

Running the session:

            do {
                if TestSceneDataProvider.isSupported {
                    print("ARKitSession starting.")
                    let sceneReconstruction = TestSceneDataProvider()
                    try await session.run([sceneReconstruction])
                }
            } catch {
                print("ARKitSession error:", error)
            }